{"id":"CVE-2018-12026","aliases":["EUVD-2022-2976","GHSA-7cv3-gvmc-8mq5","UBUNTU-CVE-2018-12026","openSUSE-SU-2024:11341-1"],"status":"published","title":"Phusion Passenger SpawningKit Contains Arbitrary Read/Write Vulnerability","description":"During the spawning of a malicious Passenger-managed application, SpawningKit in Phusion Passenger 5.3.x before 5.3.2 allows such applications to replace key files or directories in the spawning communication directory with symlinks. This then could result in arbitrary reads and writes, which in turn can result in information disclosure and privilege escalation.","severity":{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01918,"percentile":0.80026,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-59"],"published":"2018-06-17T20:00:00Z","modified":"2026-10-24T10:30:41Z","fixes":[{"ecosystem":"RubyGems","package":"passenger","fixed_in":["5.3.2"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"RubyGems","package":"passenger","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.3.0"},{"fixed":"5.3.2"}]}]},{"source":"osv","ecosystem":"RubyGems","package":"passenger","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.3.0"},{"fixed":"5.3.2"}]}],"versions":["5.3.0","5.3.1"]}],"products":[{"vendor":"phusion","product":"passenger"}],"references":[{"url":"https://blog.phusion.nl/passenger-5-3-2","tags":["x_refsource_MISC","x_transferred","Mitigation","Vendor Advisory","advisory","web","report"]},{"url":"https://security.gentoo.org/glsa/201807-02","tags":["vendor-advisory","x_refsource_GENTOO","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-12026","tags":["advisory"]},{"url":"https://blog.phusion.nl/2018/06/12/passenger-5-3-2-various-security-fixes/","tags":["report"]},{"url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/passenger/CVE-2018-12026.yml","tags":["web"]},{"url":"https://github.com/phusion/passenger/commit/fd3717a3cd357aa0e80e1e81d4dc94a1eaf928f1","tags":["web"]},{"url":"https://github.com/advisories/GHSA-7cv3-gvmc-8mq5"},{"url":"https://blog.phusion.nl/2018/06/12/passenger-5-3-2-various-security-fixes","tags":["web"]},{"url":"https://github.com/phusion/passenger","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2018-12026","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-12026","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2013-2119","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2013-4547","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-1831","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-1832","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2015-7519","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-1247","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-7529","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-12026","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-12029","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2018-12026","description":"During the spawning of a malicious Passenger-managed application, SpawningKit in Phusion Passenger 5.3.x before 5.3.2 allows such applications to replace key files or directories in the spawning communication directory with symlinks. This then could result in arbitrary reads and writes, which in turn can result in information disclosure and privilege escalation.","status":"published","published":"2018-06-17T20:00:00Z","modified":"2024-08-05T08:24:03.778Z","updated_at":"2026-11-02T14:35:06.679212Z"}],"euvd":[{"id":"EUVD-2022-2976","description":"During the spawning of a malicious Passenger-managed application, SpawningKit in Phusion Passenger 5.3.x before 5.3.2 allows such applications to replace key files or directories in the spawning communication directory with symlinks. This then could result in arbitrary reads and writes, which in turn can result in information disclosure and privilege escalation.","status":"published","published":"2018-06-17T20:00:00Z","modified":"2024-08-05T08:24:03Z","updated_at":"2026-11-03T02:39:53.575925Z"}],"ghsa":[{"id":"GHSA-7cv3-gvmc-8mq5","title":"Phusion Passenger SpawningKit Contains Arbitrary Read/Write Vulnerability","description":"During the spawning of a malicious Passenger-managed application, SpawningKit in Phusion Passenger 5.3.x before 5.3.2 allows such applications to replace key files or directories in the spawning communication directory with symlinks. This then could result in arbitrary reads and writes, which in turn can result in information disclosure and privilege escalation.","status":"published","published":"2022-05-14T01:27:14Z","modified":"2023-07-03T21:44:26Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-59"],"updated_at":"2026-11-02T14:36:55.91458Z"}],"nvd":[{"id":"CVE-2018-12026","description":"During the spawning of a malicious Passenger-managed application, SpawningKit in Phusion Passenger 5.3.x before 5.3.2 allows such applications to replace key files or directories in the spawning communication directory with symlinks. This then could result in arbitrary reads and writes, which in turn can result in information disclosure and privilege escalation.","status":"published","published":"2018-06-17T20:29:00.353Z","modified":"2026-06-17T01:37:01.573Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-59"],"updated_at":"2026-11-02T14:04:29.837913Z"}],"osv":[{"id":"CVE-2018-12026","description":"During the spawning of a malicious Passenger-managed application, SpawningKit in Phusion Passenger 5.3.x before 5.3.2 allows such applications to replace key files or directories in the spawning communication directory with symlinks. This then could result in arbitrary reads and writes, which in turn can result in information disclosure and privilege escalation.","status":"published","published":"2018-06-17T20:29:00.353Z","modified":"2026-10-24T10:30:41.667782567Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:07.934182Z"},{"id":"GHSA-7cv3-gvmc-8mq5","title":"Phusion Passenger SpawningKit Contains Arbitrary Read/Write Vulnerability","description":"During the spawning of a malicious Passenger-managed application, SpawningKit in Phusion Passenger 5.3.x before 5.3.2 allows such applications to replace key files or directories in the spawning communication directory with symlinks. This then could result in arbitrary reads and writes, which in turn can result in information disclosure and privilege escalation.","status":"published","published":"2022-05-14T01:27:14Z","modified":"2024-02-20T05:43:13.181632Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-59"],"updated_at":"2026-11-02T15:46:41.002603Z"},{"id":"UBUNTU-CVE-2018-12026","description":"During the spawning of a malicious Passenger-managed application, SpawningKit in Phusion Passenger 5.3.x before 5.3.2 allows such applications to replace key files or directories in the spawning communication directory with symlinks. This then could result in arbitrary reads and writes, which in turn can result in information disclosure and privilege escalation.","status":"withdrawn","published":"2018-06-17T20:29:00Z","modified":"2025-07-16T07:37:50.658997Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:54:16.544091Z"},{"id":"openSUSE-SU-2024:11341-1","title":"ruby2.7-rubygem-passenger-6.0.8-3.2 on GA media","description":"These are all security issues fixed in the ruby2.7-rubygem-passenger-6.0.8-3.2 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T02:39:43.862306Z","updated_at":"2026-11-02T16:58:35.195147Z"}]}}